For the plant below 14 of the steam is extracted at point 6

For the plant below, 14% of the steam is extracted at point 6 for use in a closed FWH. The quality of the steam entering the condenser is 90%

a. Find the quality of the steam at 6 and the isentropic efficiency of the HPT.

b. Explain why this system is not feasible and identify what might be wrong in the analysis.

c. If the mass flow rate of the steam is 2 kg/s, find the rate of heat removal in the condenser. Hint: Think of this as an uninsulated mixing chamber.

Solution

1. Calculate the degree of undermines “n”;

2. Choose a rational analysis scheme for method of force

3. Calculate diagrams from unit loads and actual forces;